Roll-shifting apparatus



Feb. 18, 1930. J. E. CORNELL ET AL 9 L ROLL SHIFTING APPARATUS Fi led Aug. 5, 1927 SSheetS-Sheet 1 0% gCm/neZZ.

Feb. 18, 1930.

J. E. CORNELL ET AL ROLL SHIFTING APPARATUS Filed Aug. 5, 1927 3 Sheets-Sheet 2 Feb. 18, '1930.

J. E. CORNELL ET AL 1,747,289

ROLL SHIFTING APPARATUS Filed Aug. 5, 1927 s Sheets-Sheet s 3 F1 .4 If; n-

Patented Feb. 18, 1930 UNITED STATES PATENT OFFICE JOHN E. CORNELL AND ANDREW J. VERWYS, OF CHICAGO, ILLINOIS, ASSIGNORS, BY

MESNE ASSIGNMENTS, '10 ST. REGIS PAPER COMPANY, OF NEW YORK, N. Y., A COR- PORATION on NEW YORK ROLL-SHIFTING APPARATUS Application filed August 5, 1927. Serial No. 210,842.

This invention relates to apparatus for renewing rolls of paper or similar material which are being fed to an apparatus using the material continuously. More particularly, it relates to apparatus for removing a nearly exhausted roll from its support without interfering with the rotation of the roll and for uniting the end of the nearly exhausted roll with a full roll placed upon the original support from which the nearly exhausted roll was taken.

Minor details of the invention will appear as the description proceeds.

Referring to the accompanying drawings forming a part of this specification, Figure 1 is a partial end elevation of apparatus embodying the invention, with the parts in position for removing a partly exhausted roll; Fig. 2 is similar to Fig. 1, but shows the parts in the position assumed when the partly exhausted roll is lifted from its original support; Fig. 3 is a view similar to Figs. 1 and 2, but showing the partly exhausted roll removed from its original sup port and replaced by a full roll; Fig. 4 is a partial plan view of the apparatus in the position disclosed in Fig. 3; Fig. 5 is a detail view showing the end of the material on the full roll; Fig. 6 is a detail view with the material in the full roll; Fig. 7 isa detail View showing the exhausted roll core ready for removal.

In the drawings there is shown a nearly exhausted roll 10 wound about a core 11 on a shaft 12. A. full roll 13 wound upon a core 14 supported by the shaft 15 is to be placed in the position of the nearly exhausted roll.

During the normal running of the apparatus, not shown, which uses the material forming the roll, the roll supporting shaft is mounted in end frames 16, one of which is shown in the drawings. The end frame is provided with a bearing 17 "having rollers 18 upon which the shaft rests, so that the roll may be rotated easily.

The apparatus is particularly suitable for use with such devices as tube formers, where a sheet of paper is drawn from a roll and formed into a tube, and is very useful where a plurality of such sheets are superposed and formed into a multi-ply-tube. In such cases the position of the roll laterally of the sheet is important, in order that the sheets of paper may be properly superposed.

In the construction shown, the shaft is formed with a groove 19. A latch 20 is .adapted to fit in groove 19 when the shaft is properly positioned longitudinally, and to maintain this proper longitudinal position of the shaft, the latch is pivoted at 21 upon a carrying-head 22. A. screw 23 passes through the carrying-head, and may be turned by means of a crank 24 in order to vary the position of the latch longitudinally during running of the apparatus, or to adjust the position of the roll at any time when necessary. A spring 25 normally presses the latch upward against the shaft, so that it rises into the notch as soon as the shaft is in proper position.

A lever 26 is fulcrumed at 27 upon the frame of the apparatus and carries at one end a pedal 28 by means of which the lever may be operated. A roll shifting device is supported upon legs 29 pivoted at 30 upon the end of lever 26. It will be understood that legs 29 are duplicated for each side of the apparatus, but one being shown in the drawings.

In the upper end of each leg 29 there is a bearing 31 provided with rollers 32 upon which the shaft of the roll may rest when the device is in operation- Supported upon leg 29 there is a latch 33. The latch 'is supported adjustably so that it may be moved towards or from the leg as necessary in order to position it in the same plane with latch 20.

'Leg 29 also carries brake arms 34 and 35, there being a link 36 pivoted to arm 34 and adapted to rest in arm 35, and carrying a nut 37 by which the arm may be tightened against a shaft supported upon rollers 32.

After the partially exhausted roll has been shifted from its original support, it is replaced by a full roll, and the free end of the full roll is cut in V-shape, as shown at 38 in 'justable is connected by a pin 47 with leg 29 so that.

attachment 46 to end frame 16, and

the maximum distance of the leg from the end frame may be adjustably fixed.

Attached to the end frame there is a stop 48 in position to limit the movement of the shifter leg, as shown in Figs. 1 and 2, so that thevbearing of the shifter is in proper position to raise the shaft.

The operation of the apparatus will be apparent from the above description, but for convenience will be briefly summarized as follows:

When roll 10 becomes nearly exhausted, legs 29 are swung from their normal postion at the limit of-chain t0 a position with their bearings beneath the shaft of the roll. Then by means of pedal 28 the legs are raised until rollers 32 contact shaft 15, and latch 33 is swung over into position in the upper side of notch 19 while latch 20 still maintains-its place in the under side of notch 19. In this way there is no possibility of detrimental endwise movement of the roll. Thereafter pedal 28 is lowered to the position in which it is shown in Fig. 2 and the roll is raised from its original supports. It may then be swung backward into the positionin which it is shown in Figs. 3 and 4, and the full'roll 13 may be lowered into position upon the original supports.

'In order to prevent over-running of the roll upon slowing up or stopping the machine some form of retarding mechanism is customarily used. Preferably, this takes the form of a strip, or similar means, resting upon the roll and so exerting substantially uniform friction thereon at all times. No such means is shown in the drawings, but will be readily understood. When the roll is shifted from its normal position, some similar retarding means must be provided, and the brake consisting of arms 34, 35 with link 36 and nut 37 is provided for furnishing the necessary amountof retardation. Other means might be substituted therefor.

After the nearly exhausted roll has been shifted to the position in which it is shown in Fig. 3 and a full roll with a coated end, such as shown in Fig. 5, has been properly positioned upon the ori 'nal support, the fabric will continue to be ed from the nearly exhausted roll, as indicated in Fig. 3, until it becomes evident that the fabric should be attached to the full roll. Thereupon handle 44 is moved downward and leathers 43 are raised until they bear against the under side of the fabric from the nearly exhausted roll and press it lightly upward against the outer layer of the full roll, as shown in Fig. 6. Thereupon the friction of the moving fabric against the full roll gradually starts the full roll until it acquires the speed of the moving fabric. It is preferable to position the full roll upon the supports, before raising leathers 43, with its end 38 at such a distance from the point where it will contact the fabric from roll 10 so that the full roll will ac uire substantially the speed of the fabric rom roll 10 before this fabric comes-in contact with the end 38, so that the fabric from roll 10 is united with end 38 by a substantially rolling motion.

After the fabric from roll 10 has been attached to the full roll in the manner described above, the two sheets may be allowed to move along together until roll 10 is completely exhausted, or the fabric may be out if desired, leaving a certain amount of unexhausted fabric upon the core. In either case, latch 33 is thrown back, the brake is opened, placing the apparatus in condition for the removal of the exhausted .roll, as

such as leather, formed in the manner illustrated in Figs. 3 and 6, press the fabric from roll 10 against the surface of roll 13 with a graduated yielding pressure. Exactly the necessary amount of pressure to produce the desired friction against roll 13 may be exerted,.and at the same time the fabric from 1 roll 10 is smoothed out and pressed against the coating on end 38 so that a perfectly smooth connection between the two rolls is formed.

It will be evident that various changes may be made in the construction and arrangement of the apparatus within the scope of the appended claims, while achieving many of the benefits of the described invention.

What we claim is:

1. In combination, means for supporting a shaft carrying a roll of fabric, means-on the support for positioning the shaft'endwise of the shaft, a shifter adapted to remove the shaft from said support and shift it radially from its position on said support, and means on the shifter to maintain the longitudinal position of the shaft to which it was adjusted on said support. l

2. In combination, a shaft supporting a roll of fabric and having a groove therein, a support for the shaft having a'latch adapted to enter one side of the groove, a shifting device adapted to lift the shaft from the said support and move it to one side thereof Without interfering with its rotation, and a latch on the shifter adapted to enter the other side of said groove.

3. In combination, a support for a roll of fabric, means to lift the roll from its support and shift it radially therefrom without interfering with the rotation of the roll, means to position the shifting apparatus so as to deliver fabric from the roll in a path sufliciently far from the original position of the roll to avoid contact with a full roll placed in the original position of said shifted roll, and means to move the fabric running from said shifted roll against the outer surface of a full roll placed in the original position of said shifted roll, said means comprising a flexible sheet adapted to yieldingly contact the fabric running from said shifted roll.

4. In combination, a support for a roll of fabric, means to lift the roll from its support and shift it radially therefrom Without interfering with the rotation of the roll, means to position the shifting apparatus so as to deliver fabric from the roll in a path sufficiently far from the original position of the roll to avoid contact with a full roll placed in the original position of said shifted roll, and means to move the fabric running from said shifted roll against the outer surface of a full roll placed in the original position of said shifted roll, said means comprising arms carrying loops of stiff fabric such as leather and in position to contact the fabric from the shifted roll. a

In. testimony whereof, we have hereunto signed our names to this specification.

JOHN E. CORNELL; ANDREW J. VERWYS. 

